The weight of an object above Earth varies inversely as the square of its distance from the center of Earth. If an astronaut in a space vehicle weighs 57 pounds when 6700 miles from the center of Earth, what does the astronaut weigh when 4090 miles from the center?

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

When the force acting on an object points at least partially in the direction of the motion the work done is considered to be negative

What is the most useful equation for electric power?